血小板输注无效是指患者在输注血小板后,其血小板计数未见有效提升,临床出血症状未见改善。目前,临床判断血小板输注无效的主要依据为输注前、输注后1 h、输注后24 h时患者的血小板计数,通常以血小板计数增加校正指数(corrected count increment,CCI)和输注后的实际血小板回收率(percentage platelet recovery,PPR)或输注后血小 Invalid platelet transfusion refers to patients after transfusion of platelets, no significant increase in platelet count, no improvement in clinical symptoms of bleeding. At present, the main basis for the clinical judgment of platelet transfusion invalidation is the patients’ platelet count before infusion, 1 hour after infusion and 24 hours after infusion, usually with corrected count increment (CCI) and infusion After the actual platelet recovery (PPR) or transfusion after the blood